P2A61Alternative Fuel Tank B Level Sensor Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2A61 is stored when the tank B level signal falls below the smallest voltage the sender produces even with the tank empty. Roush's manual for its dual-tank propane trucks names a sender wire shorted to ground or a damaged sender as causes of the low case and adds that the second-tank code P2067 leaves only the primary tank on the gauge. A Hall-type float module with ratiometric output, such as Rochester's for LPG tanks, can also read low when its supply voltage is missing. The driver sees tank B as empty or ignored, and the usable range on gas appears shorter than it is. No manufacturer documents P2A61 itself. Check for chafed wiring near the tank mounting first, then measure supply and ground at the sender.
- What you may notice
- Check engine light
- Tank B shown empty or left out of the gauge
- Shorter displayed gas range
- Likely causes
- LikelySender signal wire of tank B shorted to ground
- PossibleTank B sender damaged
- PossibleSupply voltage of a Hall-type sender missing
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.